AccessibilityEventInfo

java.lang.Object
- ohos.accessibility.AccessibilityEventInfo

```
public class AccessibilityEventInfo
extends Object
```
Describes the accessibility event information and provides the information for the accessibility service.
The information includes the accessibility event type, the operation that triggers the accessibility event, the package name of the event source, the movement step used for reading texts, and the accessibility event list.
When any change is made on the UI, for example, when a view control gains the focus, your app can send an AccessibilityEventInfo#TYPE_VIEW_FOCUSED_EVENT accessibility event to the accessibility service to trigger the accessibility function.

从以下版本开始:

2

另请参阅:

AccessibilitySystemAbilityClient.sendEvent(AccessibilityEventInfo)

SystemCapability

SystemCapability.Accessibility#ABILITY

字段概要

字段
限定符和类型	字段	说明
`static int`	`TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT`	Describes an event of clearing accessibility focus.
`static int`	`TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT`	Describes an event of gaining accessibility focus.
`static int`	`TYPE_VIEW_CLICKED_EVENT`	Describes an event of clicking a control, for example, clicking a button.
`static int`	`TYPE_VIEW_FOCUSED_EVENT`	Describes an event that a control has gained focus.
`static int`	`TYPE_VIEW_HOVER_ENTER_EVENT`	Describes an event that the hover enters a control.
`static int`	`TYPE_VIEW_HOVER_EXIT_EVENT`	Describes an event that the hover leaves a control.
`static int`	`TYPE_VIEW_LONG_CLICKED_EVENT`	Describes an event of pressing and holding a control.
`static int`	`TYPE_VIEW_SCROLLED_EVENT`	Describes an event of scrolling a view.
`static int`	`TYPE_VIEW_SELECTED_EVENT`	Describes an event of selecting a control.
`static int`	`TYPE_VIEW_TEXT_CHANGED_EVENT`	Describes an event that the text of a control has changed.
`static int`	`TYPE_VIEW_TEXT_SELECTION_CHANGED_EVENT`	Describes an event that the selected text has changed.
`static int`	`WINDOWS_CHANGE_ACCESSIBILITY_FOCUSED`	Describes a window change event that the selected accessibility window has changed.
`static int`	`WINDOWS_CHANGE_ACTIVE`	Describes a window change event that the window becomes active or not.
`static int`	`WINDOWS_CHANGE_ADDED`	Describes a window change event that a window is added.
`static int`	`WINDOWS_CHANGE_BOUNDS`	Describes a window change event that the window bounds have changed.
`static int`	`WINDOWS_CHANGE_CHILDREN`	Describes a window change event that a child window has changed.
`static int`	`WINDOWS_CHANGE_FOCUSED`	Describes a window change event that the selected window has changed.
`static int`	`WINDOWS_CHANGE_LAYER`	Describes a window change event that the window layer has changed.
`static int`	`WINDOWS_CHANGE_PARENT`	Describes a window change event that the parent window has changed.
`static int`	`WINDOWS_CHANGE_PIP`	Describes a window change event that the window enters or exits the picture-in-picture (PIP) mode.
`static int`	`WINDOWS_CHANGE_REMOVED`	Describes a window change event that a window is deleted.
`static int`	`WINDOWS_CHANGE_TITLE`	Describes a window change event that the window title has changed.

构造器概要

构造器
构造器	说明
`AccessibilityEventInfo()`	A constructor used to create an `AccessibilityEventInfo` instance.
`AccessibilityEventInfo(int eventType)`	A constructor used to create an `AccessibilityEventInfo` instance with a specified event type like `TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT`,`TYPE_VIEW_CLICKED_EVENT` and `TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT`.
`AccessibilityEventInfo(AccessibilityEventInfo eventInfo)`	A constructor used to create an `AccessibilityEventInfo` instance by copying the specified accessibility event information.

方法概要

所有方法实例方法具体方法
限定符和类型	方法	说明
`void`	`addContent(CharSequence in)`	Adds an element to the content list.
`void`	`addRecord(AccessibilityEventInfo eventInfo)`	Adds an accessibility event to the event list.
`int`	`getAccessibilityEventType()`	Obtains the type of an accessibility event.
`CharSequence`	`getBundleName()`	Obtains the bundle name of the event source, that is, the bundle name of the target application.
`CharSequence`	`getClassName()`	Obtains the class name.
`ArrayList<CharSequence>`	`getContentList()`	Obtains the content list in the event.
`int`	`getCount()`	Obtains the number of accessibility events.
`CharSequence`	`getDescription()`	Obtains the accessibility event description.
`int`	`getEndIndex()`	Obtains the end index of listed items on the screen.
`CharSequence`	`getLastContent()`	Obtains the last content of the component.
`int`	`getPresentIndex()`	Obtains the index of the current event.
`ArrayList<AccessibilityEventInfo>`	`getRecords()`	Obtains the accessibility event list.
`int`	`getStartIndex()`	Obtains the start index of listed items on the screen.
`int`	`getTextMoveStep()`	Obtains the movement step used for reading texts.
`int`	`getTriggerAction()`	Obtains the action that triggers the accessibility event, for example, clicking or focusing a view.
`int`	`getViewId()`	Obtains the view ID associated with the accessibility event.
`int`	`getWindowChangeTypes()`	Obtains the type of the window change event, which can be content change or status change.
`void`	`setAccessibilityEventType(int accessibilityEventType)`	Sets the type of an accessibility event.
`void`	`setBundleName(CharSequence bundleName)`	Sets the bundle name of the event source.
`void`	`setClassName(CharSequence className)`	Sets the class name.
`void`	`setCount(int count)`	Sets the number of accessibility events.
`void`	`setDescription(CharSequence description)`	Sets the accessibility event description.
`void`	`setEndIndex(int endIndex)`	Sets the end index of listed items on the screen.
`void`	`setLastContent(CharSequence lastContent)`	Sets the last content of the component.
`void`	`setPresentIndex(int presentIndex)`	Sets the index of the current event.
`void`	`setStartIndex(int startIndex)`	Sets the start index of listed items on the screen.
`void`	`setTextMoveStep(int moveStep)`	Sets the movement step used for reading texts.
`void`	`setTriggerAction(int action)`	Sets the action that triggers the accessibility event.
`void`	`setViewId(int viewId)`	Sets the view ID associated with the accessibility event.
`void`	`setWindowChangeTypes(int changeTypes)`	Sets the type of a window change event, which can be content change or status change.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT
```
public static final int TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT
```
    Describes an event of gaining accessibility focus.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT
```
public static final int TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT
```
    Describes an event of clearing accessibility focus.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_CLICKED_EVENT
```
public static final int TYPE_VIEW_CLICKED_EVENT
```
    Describes an event of clicking a control, for example, clicking a button.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_FOCUSED_EVENT
```
public static final int TYPE_VIEW_FOCUSED_EVENT
```
    Describes an event that a control has gained focus.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_HOVER_ENTER_EVENT
```
public static final int TYPE_VIEW_HOVER_ENTER_EVENT
```
    Describes an event that the hover enters a control.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_HOVER_EXIT_EVENT
```
public static final int TYPE_VIEW_HOVER_EXIT_EVENT
```
    Describes an event that the hover leaves a control.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_LONG_CLICKED_EVENT
```
public static final int TYPE_VIEW_LONG_CLICKED_EVENT
```
    Describes an event of pressing and holding a control.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_SCROLLED_EVENT
```
public static final int TYPE_VIEW_SCROLLED_EVENT
```
    Describes an event of scrolling a view.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_SELECTED_EVENT
```
public static final int TYPE_VIEW_SELECTED_EVENT
```
    Describes an event of selecting a control.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_TEXT_CHANGED_EVENT
```
public static final int TYPE_VIEW_TEXT_CHANGED_EVENT
```
    Describes an event that the text of a control has changed.
    
    另请参阅:
    
    常量字段值
  - TYPE_VIEW_TEXT_SELECTION_CHANGED_EVENT
```
public static final int TYPE_VIEW_TEXT_SELECTION_CHANGED_EVENT
```
    Describes an event that the selected text has changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_ACCESSIBILITY_FOCUSED
```
public static final int WINDOWS_CHANGE_ACCESSIBILITY_FOCUSED
```
    Describes a window change event that the selected accessibility window has changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_ACTIVE
```
public static final int WINDOWS_CHANGE_ACTIVE
```
    Describes a window change event that the window becomes active or not.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_ADDED
```
public static final int WINDOWS_CHANGE_ADDED
```
    Describes a window change event that a window is added.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_BOUNDS
```
public static final int WINDOWS_CHANGE_BOUNDS
```
    Describes a window change event that the window bounds have changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_CHILDREN
```
public static final int WINDOWS_CHANGE_CHILDREN
```
    Describes a window change event that a child window has changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_FOCUSED
```
public static final int WINDOWS_CHANGE_FOCUSED
```
    Describes a window change event that the selected window has changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_LAYER
```
public static final int WINDOWS_CHANGE_LAYER
```
    Describes a window change event that the window layer has changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_PARENT
```
public static final int WINDOWS_CHANGE_PARENT
```
    Describes a window change event that the parent window has changed.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_PIP
```
public static final int WINDOWS_CHANGE_PIP
```
    Describes a window change event that the window enters or exits the picture-in-picture (PIP) mode.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_REMOVED
```
public static final int WINDOWS_CHANGE_REMOVED
```
    Describes a window change event that a window is deleted.
    
    另请参阅:
    
    常量字段值
  - WINDOWS_CHANGE_TITLE
```
public static final int WINDOWS_CHANGE_TITLE
```
    Describes a window change event that the window title has changed.
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - AccessibilityEventInfo
```
public AccessibilityEventInfo()
```
    A constructor used to create an AccessibilityEventInfo instance.
    
    从以下版本开始:
    
    2
  - AccessibilityEventInfo
```
public AccessibilityEventInfo(int eventType)
```
    A constructor used to create an AccessibilityEventInfo instance with a specified event type like TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT,TYPE_VIEW_CLICKED_EVENT and TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT.
    
    参数:
    
    eventType - Indicates the type of the accessibility event.
    
    从以下版本开始:
    
    2
  - AccessibilityEventInfo
```
public AccessibilityEventInfo(AccessibilityEventInfo eventInfo)
```
    A constructor used to create an AccessibilityEventInfo instance by copying the specified accessibility event information.
    
    参数:
    
    eventInfo - Indicates the accessibility event information.
    
    从以下版本开始:
    
    2
- 方法详细资料
  - getTriggerAction
```
public int getTriggerAction()
```
    Obtains the action that triggers the accessibility event, for example, clicking or focusing a view.
    
    返回:
    
    Returns the action that triggers the accessibility event.
    
    从以下版本开始:
    
    2
  - getWindowChangeTypes
```
public int getWindowChangeTypes()
```
    Obtains the type of the window change event, which can be content change or status change.
    
    返回:
    
    Returns the type of the window change event.
    
    从以下版本开始:
    
    2
  - getAccessibilityEventType
```
public int getAccessibilityEventType()
```
    Obtains the type of an accessibility event.
    
    返回:
    
    Returns the type of the accessibility event.
    
    从以下版本开始:
    
    2
  - getTextMoveStep
```
public int getTextMoveStep()
```
    Obtains the movement step used for reading texts.
    
    返回:
    
    Returns the movement step, for example, moving to the next character, word, or line.
    
    从以下版本开始:
    
    2
  - getBundleName
```
public CharSequence getBundleName()
```
    Obtains the bundle name of the event source, that is, the bundle name of the target application.
    
    返回:
    
    Returns the bundle name of the event source.
    
    从以下版本开始:
    
    2
  - getViewId
```
public int getViewId()
```
    Obtains the view ID associated with the accessibility event.
    
    返回:
    
    Returns the view ID.
    
    从以下版本开始:
    
    2
  - addRecord
```
public void addRecord(AccessibilityEventInfo eventInfo)
```
    Adds an accessibility event to the event list.
    
    参数:
    
    eventInfo - Indicates the accessibility event to be added.
    
    从以下版本开始:
    
    2
  - getRecords
```
public ArrayList<AccessibilityEventInfo> getRecords()
```
    Obtains the accessibility event list.
    
    返回:
    
    Returns the accessibility event list.
    
    从以下版本开始:
    
    2
  - setTriggerAction
```
public void setTriggerAction(int action)
```
    Sets the action that triggers the accessibility event.
    
    参数:
    
    action - Indicates the action that triggers the accessibility event.
    
    从以下版本开始:
    
    2
  - setTextMoveStep
```
public void setTextMoveStep(int moveStep)
```
    Sets the movement step used for reading texts.
    
    参数:
    
    moveStep - Indicates the movement step, for example, moving to the next character, word, or line.
    
    从以下版本开始:
    
    2
  - setBundleName
```
public void setBundleName(CharSequence bundleName)
```
    Sets the bundle name of the event source.
    
    参数:
    
    bundleName - Indicates the bundle name of the event source.
    
    从以下版本开始:
    
    2
  - setAccessibilityEventType
```
public void setAccessibilityEventType(int accessibilityEventType)
```
    Sets the type of an accessibility event.
    
    参数:
    
    accessibilityEventType - Indicates the type of the accessibility event.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT, TYPE_VIEW_CLICKED_EVENT, TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT, TYPE_VIEW_FOCUSED_EVENT, TYPE_VIEW_HOVER_ENTER_EVENT, TYPE_VIEW_HOVER_EXIT_EVENT, TYPE_VIEW_LONG_CLICKED_EVENT, TYPE_VIEW_SCROLLED_EVENT, TYPE_VIEW_SELECTED_EVENT, TYPE_VIEW_TEXT_CHANGED_EVENT, TYPE_VIEW_TEXT_SELECTION_CHANGED_EVENT
  - setWindowChangeTypes
```
public void setWindowChangeTypes(int changeTypes)
```
    Sets the type of a window change event, which can be content change or status change.
    
    参数:
    
    changeTypes - Indicates the type of the window change event.
    
    从以下版本开始:
    
    2
    
    另请参阅:
    
    WINDOWS_CHANGE_ACCESSIBILITY_FOCUSED, WINDOWS_CHANGE_ACTIVE, WINDOWS_CHANGE_ADDED, WINDOWS_CHANGE_BOUNDS, WINDOWS_CHANGE_CHILDREN, WINDOWS_CHANGE_FOCUSED, WINDOWS_CHANGE_LAYER, WINDOWS_CHANGE_PARENT, WINDOWS_CHANGE_PIP, WINDOWS_CHANGE_REMOVED, WINDOWS_CHANGE_TITLE
  - setViewId
```
public void setViewId(int viewId)
```
    Sets the view ID associated with the accessibility event.
    
    参数:
    
    viewId - Indicates the view ID.
    
    从以下版本开始:
    
    2
  - getClassName
```
public CharSequence getClassName()
```
    Obtains the class name.
    
    返回:
    
    Returns the class name.
    
    从以下版本开始:
    
    4
  - setClassName
```
public void setClassName(CharSequence className)
```
    Sets the class name.
    
    参数:
    
    className - Indicates the class name to set.
    
    从以下版本开始:
    
    4
  - getDescription
```
public CharSequence getDescription()
```
    Obtains the accessibility event description.
    
    返回:
    
    Returns the description.
    
    从以下版本开始:
    
    4
  - setDescription
```
public void setDescription(CharSequence description)
```
    Sets the accessibility event description.
    
    参数:
    
    description - Indicates the description to set.
    
    从以下版本开始:
    
    4
  - getCount
```
public int getCount()
```
    Obtains the number of accessibility events.
    
    返回:
    
    Returns the number of accessibility events.
    
    从以下版本开始:
    
    4
  - setCount
```
public void setCount(int count)
```
    Sets the number of accessibility events.
    
    参数:
    
    count - Indicates the number of accessibility events to set.
    
    从以下版本开始:
    
    4
  - getPresentIndex
```
public int getPresentIndex()
```
    Obtains the index of the current event.
    
    返回:
    
    Returns the event index.
    
    从以下版本开始:
    
    4
  - setPresentIndex
```
public void setPresentIndex(int presentIndex)
```
    Sets the index of the current event.
    
    参数:
    
    presentIndex - Indicates the event index to set.
    
    从以下版本开始:
    
    4
  - getStartIndex
```
public int getStartIndex()
```
    Obtains the start index of listed items on the screen.
    
    返回:
    
    Returns the start index.
    
    从以下版本开始:
    
    4
  - setStartIndex
```
public void setStartIndex(int startIndex)
```
    Sets the start index of listed items on the screen.
    
    参数:
    
    startIndex - Indicates the start index to set.
    
    从以下版本开始:
    
    4
  - getEndIndex
```
public int getEndIndex()
```
    Obtains the end index of listed items on the screen.
    
    返回:
    
    Returns the end index.
    
    从以下版本开始:
    
    4
  - setEndIndex
```
public void setEndIndex(int endIndex)
```
    Sets the end index of listed items on the screen.
    
    参数:
    
    endIndex - Indicates the end index to set.
    
    从以下版本开始:
    
    4
  - getLastContent
```
public CharSequence getLastContent()
```
    Obtains the last content of the component.
    
    返回:
    
    Returns the last content of the component.
    
    从以下版本开始:
    
    4
  - setLastContent
```
public void setLastContent(CharSequence lastContent)
```
    Sets the last content of the component.
    
    参数:
    
    lastContent - Indicates the last content to set for the component.
    
    从以下版本开始:
    
    4
  - getContentList
```
public ArrayList<CharSequence> getContentList()
```
    Obtains the content list in the event.
    
    返回:
    
    Returns the content list in the event.
    
    从以下版本开始:
    
    4
  - addContent
```
public void addContent(CharSequence in)
```
    Adds an element to the content list.
    
    参数:
    
    in - Indicates the element to add.
    
    从以下版本开始:
    
    4

类 AccessibilityEventInfo

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

TYPE_VIEW_ACCESSIBILITY_FOCUSED_EVENT

TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED_EVENT

TYPE_VIEW_CLICKED_EVENT

TYPE_VIEW_FOCUSED_EVENT

TYPE_VIEW_HOVER_ENTER_EVENT

TYPE_VIEW_HOVER_EXIT_EVENT

TYPE_VIEW_LONG_CLICKED_EVENT

TYPE_VIEW_SCROLLED_EVENT

TYPE_VIEW_SELECTED_EVENT

TYPE_VIEW_TEXT_CHANGED_EVENT

TYPE_VIEW_TEXT_SELECTION_CHANGED_EVENT

WINDOWS_CHANGE_ACCESSIBILITY_FOCUSED

WINDOWS_CHANGE_ACTIVE

WINDOWS_CHANGE_ADDED

WINDOWS_CHANGE_BOUNDS

WINDOWS_CHANGE_CHILDREN

WINDOWS_CHANGE_FOCUSED

WINDOWS_CHANGE_LAYER

WINDOWS_CHANGE_PARENT

WINDOWS_CHANGE_PIP

WINDOWS_CHANGE_REMOVED

WINDOWS_CHANGE_TITLE

构造器详细资料

AccessibilityEventInfo

AccessibilityEventInfo

AccessibilityEventInfo

方法详细资料

getTriggerAction

getWindowChangeTypes

getAccessibilityEventType

getTextMoveStep

getBundleName

getViewId

addRecord

getRecords

setTriggerAction

setTextMoveStep

setBundleName

setAccessibilityEventType

setWindowChangeTypes

setViewId

getClassName

setClassName

getDescription

setDescription

getCount

setCount

getPresentIndex

setPresentIndex

getStartIndex

setStartIndex

getEndIndex

setEndIndex

getLastContent

setLastContent

getContentList

addContent